Social behavior in the freshwater pulmonate snail Biomphalaria glabrata (Say)

Simpson, A. W.; Thomas, J. D.; Townsend, Colin R.

doi:10.1016/s0091-6773(73)80133-6

Cited by 22 publications

(8 citation statements)

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“…Outros exemplos sobre quantificação da velocidade em caramujos, em diferentes situações experimentais, poderão ser encontrados em Pimentel & White (1959); Simpson et al (1973); Sodeman (1973); Pieri et al (1980a); Schall et al (1985;1986a;1986b).…”

Section: Outros Critérios De Quantificaçãounclassified

“…Com Biomphalaria glabrata, utilizando-se cameras super 8 ou 16mm, providas de intervalômetros, foram realizados vários trabalhos: Townsend (1973; registrou os deslocamentos em relação aos estímulos alimentares e à trilha de muco; Townsend (1975) também estudou a localização dos caramujos em presença de alimento no fundo de recipentes; Simpson et al (1973) estudaram as inter-relações sociais; Sodeman & Dowda (1974) estudaram a localização do caramujo em relação à temperatura, luminosidade e disponibilidade alimentar. Pieri et al (1980a) fizeram uma caixa com luminosidade e temperatura controlada em que o registro por cinematografia com lapso de tempo era feito simultaneamente com o registro das condições ambientais (Figura 1).…”

Section: Uso De Instrumentos Registradoresunclassified

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Tópicos em Malacologia Médica

Barbosa¹

1995

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FIGURA 29: Seqüência de movimentos, deslocamentos e posturas que caracterizam a saída da água. (A) Estando o caramujo na superfície, ele rompe a película da água. A concha passa a ter uma postura pendente; (8) O caramujo prossegue no seu deslocamento se arrastando, com a concha pendente e a massa cefalopodal aderida a parede lateral do aquário; (C) Uma vez atingida uma certa altura acima do nível da água, o caramujo aí permanece aderido ao vidro lateral do aquário, pela face esquerda da concha BIGGELAAR, J. A. M. van den, 1971. Development of division synchrony and bilateral symmetry in the first quartet of micromeres in eggs of Lymnaea.

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Section: Outros Critérios De Quantificaçãounclassified

Section: Uso De Instrumentos Registradoresunclassified

Tópicos em Malacologia Médica

Barbosa¹

1995

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“…As its senses are poor, its active sensorial space is short, but the mucous trail left by other snails could be regarded as an extension of that active space, possibly as a kind of pheromone for mating purposes (Simpson et al 1973;Townsend 1974). In an aquarium without vegetation, adult animals were more frequent on the walls and on the bottom, where they fed and copulated (Michelson 1960;Sodeman and Dowda 1974;Pimentel-Souza et al 1976).…”

Section: Introductionmentioning

confidence: 99%

“…In an aquarium without vegetation, adult animals were more frequent on the walls and on the bottom, where they fed and copulated (Michelson 1960;Sodeman and Dowda 1974;Pimentel-Souza et al 1976). Young snails aggregate rarely, have no sexual behavior, and stay more on the bottom of the aquarium (Simpson et al 1973;Pimentel-Souza 1977 Attempts to reduce human infection are made by the World Health Organization by educating people to use fresh water in daily hours of low emergence of cercariae from their vector. The scientific basis of control measures would be complemented by determining the periods when vectors occur at the surface in greatest numbers, and when the head-foot is most extended, as well as the underlying causes of these behaviors.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Biomphalaria glabrata (Gastropoda: Pulmonata) under different lighting conditions

Pimentel-Souza¹,

Schall²,

Lautner³

et al. 1984

Can. J. Zool.

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1984.Behavior of Biornphcrltrritr glcrbratcr (Gastropoda: Pulmonata) under different lighting conditions. Can. J . Zool. 62: 2328 -2334. The preferred position, the surface contact area of the head-foot, and the locomotor activity of Biomphulariu glnbrcrtu were studied in a laboratory aquarium throughout the year. The snails were more frequently found on the walls and on the bottom than on the surface. Under two regimes of illumination their frequency of occurrences were different. The extent of the head-foot outside the shell increased from spring or summer to winter, and was significantly correlated negatively with temperature rather than illumination. Movement increased from summer to winter. Under artificial vertical lighting in the natural day cycle in group conditions two daily peaks become evident, at dusk and sunrise. Abrupt changes of illumination, especially during dusk, were discriminative cues for exogenous control of locomotion. Under constant darkness and in constant light, the level of locomotion was significantly lower than that under a natural day cycle of illumination, but in both regimes, locomotion was not significantly different; therefore, absolute illumination did not change the level of locomotion. In both regimes, snails were no longer synchronized to the solar rhythm. ' The threshold for natural light perception was around 20 Ix, when photokinesis appeared during the winter. Photokinesis increased with locomotion and both activities varied inversely with temperature.

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“…In view of the fact that crowding B. glabrata up to a critical density produces a conditioned medium which enhances growth and natality it can be suggested that it would be selectively advantageous for the snails to become gregarious and this is in fact the case (Simpson, Thomas & Townsend, 1973). It may be suggested that the gregarious behaviour and physiological benefits of crowding would be of adaptive value to a contagiously distributed, fugitive, or "r' y species such as B. glabrata as it enables the population to grow rapidly when conditions are favourable.…”

Section: Adaptive Signijicancementioning

confidence: 99%

Studies on the chemical ecology of Biomphalaria glabrata: The effects of chemical conditioning by the snails kept at various densities on their growth and metabolism

1975

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It has been shown that heterotypically conditioned media (Het. C.M.) produced by lettuce fed snails maintained at various densities can influence the allometric growth and the rates of specific growth, ingestion, egestion, assimilation and heart beat of isolated assay snails. The growth rate of the assay snails was enhanced by increasing the density of snails producing the Het. C.M. to an optimum threshold of one snail per 100 ml. Further increases in density were followed by a decline in their growth rate. The higher growth achieved by the assay snails in the optimum treatment can be attributed to the fact that their specific growth rates over the first three weeks of the experiment were higher than those of snails in other treatments. Ingestion and assimilation correlated well with specific growth rates. Percentage assimilation values are high, ranging from 78.4 to 89.6%. The onset of reproductive activity is followed by a dramatic decline from approximately 26 % to 5 % in the gross efficiency of utilization of food for somatic growth. Snails not receiving Het. C.M. from the outer tanks have a relatively higher ratio of specific growth rate in weight to length than was the case with snails in the other treatments. The heart beat rates of snails in the Het. C.M. produced by snails at densities of 80 to 160 snails per 41 are significantly lower than those of snails at other densities. The possible causation and adaptive significance of these effects are discussed.

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Social behavior in the freshwater pulmonate snail Biomphalaria glabrata (Say)

Cited by 22 publications

References 3 publications

Tópicos em Malacologia Médica

Tópicos em Malacologia Médica

Behavior of Biomphalaria glabrata (Gastropoda: Pulmonata) under different lighting conditions

Studies on the chemical ecology of Biomphalaria glabrata: The effects of chemical conditioning by the snails kept at various densities on their growth and metabolism

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